# NHTSA Engineering Analysis EA89036
> **TRAILER SEPARATION** · Opened 1989-09-05 · Closed 1990-11-30
## Investigation
- **Action number:** EA89036
- **Type:** Engineering Analysis
- **Open date:** 1989-09-05
- **Close date:** 1990-11-30
- **Manufacturer:** I.R. WITZER CO., INC.
- **Affected makes:** WITZER
- **Affected components:** STRUCTURE
- **Affected model years:** 1985, 1989
- **Affected (make, year) variants:** 3
## Summary

There is no summary currently available

## Source
- [NHTSA ODI investigation page](https://www-odi.nhtsa.dot.gov/owners/SearchResults?searchType=ID&targetCategory=I&searchCriteria.nhtsa_ids=EA89036)
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